NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Ozonation and alkaline-peroxide pretreatment of wheat straw for Cryptococcus curvatus fermentationCrop residues in an Advanced Life Support System (ALS) contain many valuable components that could be recovered and used. Wheat is 60% inedible, with approximately 90% of the total sugars in the residue cellulose and hemicellulose. To release these sugars requires pretreatment followed by enzymatic hydrolysis. Cryptococcus curvatus, an oleaginous yeast, uses the sugars in cellulose and hemicellulose for growth and production of storage triglycerides. In this investigation, alkaline-peroxide and ozonation pretreatment methods were compared for their efficiency to release glucose and xylose to be used in the cultivation of C. curvatus. Leaching the biomass with water at 65 degrees C for 4 h prior to pretreatment facilitated saccharification. Alkaline-peroxide and ozone pretreatment were almost 100% and 80% saccharification efficient, respectively. The sugars derived from the hydrolysis of alkaline-peroxide-treated wheat straw supported the growth of C. curvatus and the production of edible single-cell oil.
Document ID
20040088689
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Greenwalt, C. J.
(Cornell University Ithaca, NY 14853, United States)
Hunter, J. B.
Lin, S.
McKenzie, S.
Denvir, A.
Date Acquired
August 21, 2013
Publication Date
January 1, 2000
Publication Information
Publication: Life support & biosphere science : international journal of earth space
Volume: 7
Issue: 3
ISSN: 1069-9422
Subject Category
Man/System Technology And Life Support
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Life Support Systems

Available Downloads

There are no available downloads for this record.
No Preview Available